What kind of material could this be you think? (pictures)

[greenhouse]

What kind of material is this, do you think?

It looks like some kind of coarse fiber/chip mixed with mortar. Cement?

This is a ventilation duct in a barn from the 1950s.


This is in a wall in the same barn but in a smaller workshop area.

 

[tommib]

Isn't that polished straw?

 

[Fotografen]

or träullit?

 

[GK100]

It is usually called "träullit" and is also available as boards, wood shavings bound with cement. Not uncommon on the ceiling in basement spaces with cast vaults. If you are thinking of asbestos, it is probably a non-issue here.

 

[greenhouse]

Oh, I learned something new there. Träullit... was it around in the 50s too? Plastered träullit in this case, I assume?

 

[Stefan N]

Yes, it has been around for a long time. Very good material that many remove in sheer panic because they don't know better.

 

[greenhouse]

Yeah, I mean it looks pretty weird, polished white makes it look even weirder.

 

[holetaker]

I have learned that it's called herraklitmatta, though unsure about the spelling. This could indeed be some dialectal invention.
Used as someone has previously written in basements and parking garages as a sound dampener. Completely harmless
Looks like a hole-drilling colleague has been at work

 

[greenhouse]

Hello again!

Thanks for all the answers. I have now been to the analysis with the sample and it turned out not to contain asbestos. Might be interesting for someone to know, especially me!!!

 

[TheGame]

Hung from the ceiling in old gymnasiums before. Remember when you threw or shot a ball into the ceiling, debris always fell down